import 'mocha';
import { expect } from 'chai';
import { sudokuSolver } from '../../../../src/js/index';

describe('Sudoku Solver', () => {
  it('sudoku solver', () => {
    const grid = [
      [3, 0, 6, 5, 0, 8, 4, 0, 0],
      [5, 2, 0, 0, 0, 0, 0, 0, 0],
      [0, 8, 7, 0, 0, 0, 0, 3, 1],
      [0, 0, 3, 0, 1, 0, 0, 8, 0],
      [9, 0, 0, 8, 6, 3, 0, 0, 5],
      [0, 5, 0, 0, 9, 0, 6, 0, 0],
      [1, 3, 0, 0, 0, 0, 2, 5, 0],
      [0, 0, 0, 0, 0, 0, 0, 7, 4],
      [0, 0, 5, 2, 0, 6, 3, 0, 0]
    ];
    const solution = [
      [3, 1, 6, 5, 7, 8, 4, 9, 2],
      [5, 2, 9, 1, 3, 4, 7, 6, 8],
      [4, 8, 7, 6, 2, 9, 5, 3, 1],
      [2, 6, 3, 4, 1, 5, 9, 8, 7],
      [9, 7, 4, 8, 6, 3, 1, 2, 5],
      [8, 5, 1, 7, 9, 2, 6, 4, 3],
      [1, 3, 8, 9, 4, 7, 2, 5, 6],
      [6, 9, 2, 3, 5, 1, 8, 7, 4],
      [7, 4, 5, 2, 8, 6, 3, 1, 9]
    ];
    expect(sudokuSolver(grid)).to.deep.equal(solution);
  });

  it('sudoku solver 2', () => {
    const grid = [
      [5, 3, 0, 0, 7, 0, 0, 0, 0],
      [6, 0, 0, 1, 9, 5, 0, 0, 0],
      [0, 9, 8, 0, 0, 0, 0, 6, 0],
      [8, 0, 0, 0, 6, 0, 0, 0, 3],
      [4, 0, 0, 8, 0, 3, 0, 0, 1],
      [7, 0, 0, 0, 2, 0, 0, 0, 6],
      [0, 6, 0, 0, 0, 0, 2, 8, 0],
      [0, 0, 0, 4, 1, 9, 0, 0, 5],
      [0, 0, 0, 0, 8, 0, 0, 7, 9]
    ];
    const solution = [
      [5, 3, 4, 6, 7, 8, 9, 1, 2],
      [6, 7, 2, 1, 9, 5, 3, 4, 8],
      [1, 9, 8, 3, 4, 2, 5, 6, 7],
      [8, 5, 9, 7, 6, 1, 4, 2, 3],
      [4, 2, 6, 8, 5, 3, 7, 9, 1],
      [7, 1, 3, 9, 2, 4, 8, 5, 6],
      [9, 6, 1, 5, 3, 7, 2, 8, 4],
      [2, 8, 7, 4, 1, 9, 6, 3, 5],
      [3, 4, 5, 2, 8, 6, 1, 7, 9]
    ];
    expect(sudokuSolver(grid)).to.deep.equal(solution);
  });
});
